--- a/jdk/src/share/classes/sun/dyn/CallSiteImpl.java Wed Jul 05 17:38:31 2017 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,141 +0,0 @@
-/*
- * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package sun.dyn;
-
-import java.dyn.*;
-import static sun.dyn.MemberName.uncaughtException;
-
-/**
- * Parts of CallSite known to the JVM.
- * @author jrose
- */
-public class CallSiteImpl {
- // this implements the upcall from the JVM, MethodHandleNatives.makeDynamicCallSite:
- static CallSite makeSite(MethodHandle bootstrapMethod,
- // Callee information:
- String name, MethodType type,
- // Extra arguments for BSM, if any:
- Object info,
- // Caller information:
- MemberName callerMethod, int callerBCI) {
- Class<?> callerClass = callerMethod.getDeclaringClass();
- Object caller;
- if (bootstrapMethod.type().parameterType(0) == Class.class && TRANSITIONAL_BEFORE_PFD)
- caller = callerClass; // remove for PFD
- else
- caller = MethodHandleImpl.IMPL_LOOKUP.in(callerClass);
- if (bootstrapMethod == null && TRANSITIONAL_BEFORE_PFD) {
- // If there is no bootstrap method, throw IncompatibleClassChangeError.
- // This is a valid generic error type for resolution (JLS 12.3.3).
- throw new IncompatibleClassChangeError
- ("Class "+callerClass.getName()+" has not declared a bootstrap method for invokedynamic");
- }
- CallSite site;
- try {
- Object binding;
- info = maybeReBox(info);
- if (info == null) {
- binding = bootstrapMethod.invokeGeneric(caller, name, type);
- } else if (!info.getClass().isArray()) {
- binding = bootstrapMethod.invokeGeneric(caller, name, type, info);
- } else {
- Object[] argv = (Object[]) info;
- if (3 + argv.length > 255)
- new InvokeDynamicBootstrapError("too many bootstrap method arguments");
- MethodType bsmType = bootstrapMethod.type();
- if (bsmType.parameterCount() == 4 && bsmType.parameterType(3) == Object[].class)
- binding = bootstrapMethod.invokeGeneric(caller, name, type, argv);
- else
- binding = MethodHandles.spreadInvoker(bsmType, 3)
- .invokeGeneric(bootstrapMethod, caller, name, type, argv);
- }
- //System.out.println("BSM for "+name+type+" => "+binding);
- if (binding instanceof CallSite) {
- site = (CallSite) binding;
- } else if (binding instanceof MethodHandle && TRANSITIONAL_BEFORE_PFD) {
- // Transitional!
- MethodHandle target = (MethodHandle) binding;
- site = new ConstantCallSite(target);
- } else {
- throw new ClassCastException("bootstrap method failed to produce a CallSite");
- }
- if (TRANSITIONAL_BEFORE_PFD)
- PRIVATE_INITIALIZE_CALL_SITE.invokeExact(site, name, type,
- callerMethod, callerBCI);
- assert(site.getTarget() != null);
- assert(site.getTarget().type().equals(type));
- } catch (Throwable ex) {
- InvokeDynamicBootstrapError bex;
- if (ex instanceof InvokeDynamicBootstrapError)
- bex = (InvokeDynamicBootstrapError) ex;
- else
- bex = new InvokeDynamicBootstrapError("call site initialization exception", ex);
- throw bex;
- }
- return site;
- }
-
- private static boolean TRANSITIONAL_BEFORE_PFD = true; // FIXME: remove for PFD
-
- private static Object maybeReBox(Object x) {
- if (x instanceof Integer) {
- int xi = (int) x;
- if (xi == (byte) xi)
- x = xi; // must rebox; see JLS 5.1.7
- return x;
- } else if (x instanceof Object[]) {
- Object[] xa = (Object[]) x;
- for (int i = 0; i < xa.length; i++) {
- if (xa[i] instanceof Integer)
- xa[i] = maybeReBox(xa[i]);
- }
- return xa;
- } else {
- return x;
- }
- }
-
- // This method is private in CallSite because it touches private fields in CallSite.
- // These private fields (vmmethod, vmindex) are specific to the JVM.
- private static final MethodHandle PRIVATE_INITIALIZE_CALL_SITE;
- static {
- try {
- PRIVATE_INITIALIZE_CALL_SITE =
- !TRANSITIONAL_BEFORE_PFD ? null :
- MethodHandleImpl.IMPL_LOOKUP.findVirtual(CallSite.class, "initializeFromJVM",
- MethodType.methodType(void.class,
- String.class, MethodType.class,
- MemberName.class, int.class));
- } catch (ReflectiveOperationException ex) {
- throw uncaughtException(ex);
- }
- }
-
- public static void setCallSiteTarget(Access token, CallSite site, MethodHandle target) {
- Access.check(token);
- MethodHandleNatives.setCallSiteTarget(site, target);
- }
-}